题目内容
| 解方程. X:50=1.5:75 |
| 25%x=4.75. |
(1)X:50=1.5:75,
75x=50×1.5,
75x=75,
75x÷75=75÷75,
x=1;
(2)
+
x=1,
+
x-
=1-
,
x=
,
x=
;
(3)25%x=4.75.
25%x÷25%=4.75÷25%,
x=19.
75x=50×1.5,
75x=75,
75x÷75=75÷75,
x=1;
(2)
| 4 |
| 5 |
| 4 |
| 5 |
| 4 |
| 5 |
| 4 |
| 5 |
| 4 |
| 5 |
| 4 |
| 5 |
| 4 |
| 5 |
| 1 |
| 5 |
x=
| 1 |
| 4 |
(3)25%x=4.75.
25%x÷25%=4.75÷25%,
x=19.
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